JPS61218761A - Starter for suction pipe internal ethanole injection type spark ignition engine - Google Patents
Starter for suction pipe internal ethanole injection type spark ignition engineInfo
- Publication number
- JPS61218761A JPS61218761A JP60058209A JP5820985A JPS61218761A JP S61218761 A JPS61218761 A JP S61218761A JP 60058209 A JP60058209 A JP 60058209A JP 5820985 A JP5820985 A JP 5820985A JP S61218761 A JPS61218761 A JP S61218761A
- Authority
- JP
- Japan
- Prior art keywords
- ethanol
- heater
- suction pipe
- fuel injection
- injection valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002347 injection Methods 0.000 title claims abstract description 25
- 239000007924 injection Substances 0.000 title claims abstract description 25
- 239000007858 starting material Substances 0.000 title 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 66
- 239000000446 fuel Substances 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000005507 spraying Methods 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000009834 vaporization Methods 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
- F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
- F02M31/12—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating electrically
- F02M31/125—Fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
- F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
- F02M31/12—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating electrically
- F02M31/13—Combustion air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
- F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
- F02M31/16—Other apparatus for heating fuel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はその機関始動時にその始動を容易にする始動装
置を装備した吸気管内エタノール噴射式火花点火機関の
始動装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a starting device for a spark ignition engine with ethanol injection in the intake pipe, which is equipped with a starting device that facilitates starting the engine.
従来、エタノール吸気管内に噴射する方式で機関を始動
する場合、室温が１９℃以下に下がると始動しないとい
う問題があった。Conventionally, when starting an engine by injecting ethanol into the intake pipe, there has been a problem that the engine will not start if the room temperature drops below 19°C.
これはエタノールの気化潜熱がガソリンの３倍もあり、
十分な熱を周囲から吸収できないことと、たとえ蒸発し
ても可燃範囲まで混合比が下がらないためである。This is because the latent heat of vaporization of ethanol is three times that of gasoline.
This is because they cannot absorb enough heat from the surroundings, and even if they evaporate, the mixture ratio does not fall to the flammable range.
一方、予熱栓に通ずる電気回路中に電気発熱抵抗体を連
結して、これを吸気通路中に設け、その発熱により吸気
を加温するように形成した内燃機関の吸気加熱装置に関
する実公昭３９−２００１の考案及びエアヒータを吸気
ボートより低く配置した内燃機関のエアヒータ装置に関
する実開昭５８−１５６１５８の考案等がなされている
が、これらはディーゼル機関の寒冷時の機関始動に際し
て吸入空気を加熱する目的のものであり、エタノールを
吸気管内に噴射して機関を始動する場合の始動を補助す
るための本発明とは異なったものである。On the other hand, Utility Model Publication No. 39-1999 relates to an intake air heating device for an internal combustion engine, in which an electric heating resistor is connected to an electric circuit leading to a preheating plug, and the electric heating resistor is installed in an intake passage, and the generated heat warms the intake air. 2001 and Utility Model Application No. 58-156158 regarding an air heater device for an internal combustion engine in which the air heater is placed lower than the intake boat, these were designed to heat intake air when starting a diesel engine in cold weather. This is different from the present invention, which assists in starting an engine by injecting ethanol into the intake pipe.
本発明は、エタノールが吸気管内に噴射されると同時に
、蒸気となってシリンダ内に吸込まれ、また吸入空気を
加熱することにより始動性を向上させることを目的とし
てなされたものである。The present invention aims to improve starting performance by injecting ethanol into the intake pipe and simultaneously drawing it into the cylinder as vapor and heating the intake air.
即ち、本発明の吸気管内エタノール噴射式火花点火機関
の始動装置は、吸気管内の吸気弁の手前に空気を加熱可
能なヒータ及びエタノールを噴射する燃料噴射弁を設け
ると共に、該燃料噴射弁または該吸気管内にエタノール
を加熱可能なヒータを設けることにより構成される。That is, the starting device for a spark ignition engine with ethanol injection in the intake pipe of the present invention is provided with a heater capable of heating air and a fuel injection valve that injects ethanol in front of the intake valve in the intake pipe, and a fuel injection valve that injects ethanol. It is constructed by providing a heater capable of heating ethanol in the intake pipe.
以下図面を参照して本発明の詳細な説明するが、各実施
例において同じ部品は同じ部品番号で示している。The present invention will be described in detail below with reference to the drawings, in which the same parts are designated by the same part numbers in each embodiment.
まず、第１図の実施例１は吸気管内エタノール噴射式火
花点火機関の始動装置の概略縦断面図であり、シリンダ
ライナ１１、シリンダヘッド１２及びピストン７からな
る燃焼室１３の頂部に点火プラグ３を有するものである
。First, Embodiment 1 in FIG. 1 is a schematic vertical cross-sectional view of a starting device for a spark ignition engine with ethanol injection in the intake pipe. It has the following.
シリンダヘッド１２には吸気管１０及び排気管１４が設
けられ、それぞれ吸気弁１及び排気弁２が内設されてい
る。The cylinder head 12 is provided with an intake pipe 10 and an exhaust pipe 14, in which an intake valve 1 and an exhaust valve 2 are provided, respectively.
また、矢印Ａの空気を導入する吸気管１０内には、スロ
ットルバルブ６が設けられ、更にエタノールＥを吸気管
１０内に噴射する燃料噴射弁４が設けられ、この燃料噴
射弁４はコントローラ５によって制御される。Further, a throttle valve 6 is provided in the intake pipe 10 that introduces the air indicated by the arrow A, and a fuel injection valve 4 that injects ethanol E into the intake pipe 10 is also provided. controlled by
そこで、この実施例１では吸気管１０内の吸気弁１の手
前に空気Ａを加熱する電気式のヒータ９を有しており、
燃料噴射弁４にもエタノールＥを加熱するヒータ８を有
しており、始動時に吸気管１０内の空気Ａをヒータ９で
加熱し、更に、ヒータ８により加熱されたエタノールＥ
を燃料噴射弁４より吸気管１０内に噴射することにより
始動を可能にしている。Therefore, in the first embodiment, an electric heater 9 for heating the air A is provided in front of the intake valve 1 in the intake pipe 10.
The fuel injection valve 4 also has a heater 8 that heats the ethanol E, and at the time of starting, the air A in the intake pipe 10 is heated by the heater 9, and the ethanol E heated by the heater 8 is heated by the heater 9.
The engine is started by injecting the fuel into the intake pipe 10 from the fuel injection valve 4.
以上の構成からなる実施例１では、吸気管ＩＯ内にヒー
タ９を設けて空気Ａを加熱し、その上、噴射するエタノ
ールＥもヒータ８で加熱して蒸発潜熱を与えるようにな
っている。In the first embodiment having the above configuration, a heater 9 is provided in the intake pipe IO to heat the air A, and the ethanol E to be injected is also heated by the heater 8 to provide latent heat of vaporization.
これによってエタノールＥは噴射されると同時に減圧沸
騰を起して蒸発し、まわりの温度が高いのでそのまま蒸
気となって燃焼室１３内に吸込まれ始動可能となる。As a result, the ethanol E boils under reduced pressure and evaporates at the same time as it is injected, and since the surrounding temperature is high, it becomes steam as it is and is sucked into the combustion chamber 13, making it possible to start the engine.
次に、第２−Ａ図の実施例２は実施例１とほぼ同様な構
成及び機能を存するものであるが、吸気管１０内の吸気
弁１の直前近くに格子状をした電気式のヒータ９Ａを燃
料噴射弁４の軸線上に配置し、エタノールＥの噴霧が通
過するようにしている。Next, the second embodiment shown in FIG. 2-A has almost the same configuration and function as the first embodiment, but a grid-shaped electric heater is installed near the intake valve 1 in the intake pipe 10. 9A is arranged on the axis of the fuel injection valve 4 so that the spray of ethanol E can pass therethrough.
機関始動時には格子状のヒータ９Ａに通電させると共に
、燃料噴射弁４からエタノールＥを噴射し、そのエタノ
ールＥと空気Ａとをこのヒータ９Ａで同時に加熱して機
関の始動を可能としている。At the time of starting the engine, the grid-shaped heater 9A is energized, ethanol E is injected from the fuel injection valve 4, and the ethanol E and air A are simultaneously heated by the heater 9A to enable the engine to start.
更に、第３図の実施例３も実施例１とほぼ同様な構成の
始動装置であり、相違点は燃料噴射弁４の噴口部付近か
ら吸気弁１までの吸気管１０の管壁内に電気式のヒータ
９Ｂを設けたものである。Furthermore, Embodiment 3 in FIG. 3 is a starting device having almost the same configuration as Embodiment 1, and the difference is that an electric current is installed in the pipe wall of the intake pipe 10 from the vicinity of the nozzle of the fuel injection valve 4 to the intake valve 1. A heater 9B of the formula is provided.
この場合、燃料噴射弁４に設けられたヒータ８によりあ
らかじめ加熱されたエタノールＥを吸気管ｌＯ内に噴射
して減圧沸騰を起こさせることにより、エタノールＥを
蒸発させるが、ここでもし吸気弁１までの吸気管１０内
壁温度が低ければ再び液化して壁面を流れることになる
のに対し、この実施例３では管壁内面にヒータ９Ｂを設
けることによって再液化を防止できる。In this case, the ethanol E is evaporated by injecting the ethanol E preheated by the heater 8 provided in the fuel injection valve 4 into the intake pipe lO and causing boiling under reduced pressure. If the temperature of the inner wall of the intake pipe 10 is low, it will liquefy again and flow on the wall surface, but in this third embodiment, re-liquefaction can be prevented by providing the heater 9B on the inner surface of the pipe wall.
従って、本発明の吸気管内エタノール噴射式火花点火機
関の始動装置では、噴射するエタノールを加熱して蒸発
潜熱を与え、噴射と同時に減圧沸騰を起させて蒸発させ
ることができ、更にエタノールは加熱された高温の空気
によりそのまま蒸気となって燃焼室内に吸い込まれるの
で、良好な始動が可能になるという効果がある。Therefore, in the starting device for a spark ignition engine with ethanol injection in the intake pipe of the present invention, it is possible to heat the ethanol to be injected, give it latent heat of vaporization, cause boiling under reduced pressure to occur at the same time as the injection, and evaporate the ethanol. The high-temperature air directly turns into steam and is sucked into the combustion chamber, which has the effect of making it possible to start the engine better.
なお、本発明は吸気管内エタノール噴射式火花点火機関
全般に対して有効に適用することができる。Note that the present invention can be effectively applied to all spark ignition engines with ethanol injection in the intake pipe.
図面は本発明の実施例における吸気管内エタノール噴射
式火花点火機関の始動装置を示しており、第１図はその
実施例１の概略縦断面図、第２−Ａ図はその実施例２の
概略縦断面図、第２−Ｂ図は第２−Ａ図の格子状のヒー
タの平面図、第３図はその実施例３の概略縦断面図であ
る。
ｌ・・・吸気弁、４・・・燃料噴射弁、８・・・ヒータ
、９．９Ａ、９Ｂ・・・ヒータ、１０・・・吸気管、Ａ
・・・空気、Ｅ・・・エタノール。The drawings show a starting device for an intake pipe ethanol injection type spark ignition engine according to an embodiment of the present invention, FIG. 1 is a schematic vertical sectional view of the first embodiment, and FIG. 2-A is a schematic diagram of the second embodiment. 2-B is a plan view of the lattice-shaped heater of FIG. 2-A, and FIG. 3 is a schematic longitudinal sectional view of the third embodiment. l...Intake valve, 4...Fuel injection valve, 8...Heater, 9.9A, 9B...Heater, 10...Intake pipe, A
...Air, E...Ethanol.
Claims (1)
エタノールを噴射する燃料噴射弁を設けると共に、該燃
料噴射弁または該吸気管内にエタノールを加熱可能なヒ
ータを設けたことを特徴とする吸気管内エタノール噴射
式火花点火機関の始動装置。An intake air intake system characterized in that a heater capable of heating air and a fuel injection valve for injecting ethanol are provided in front of the intake valve in the intake pipe, and a heater capable of heating ethanol is provided within the fuel injection valve or the intake pipe. Starting device for in-tube ethanol injection spark ignition engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60058209A JPS61218761A (en) | 1985-03-25 | 1985-03-25 | Starter for suction pipe internal ethanole injection type spark ignition engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60058209A JPS61218761A (en) | 1985-03-25 | 1985-03-25 | Starter for suction pipe internal ethanole injection type spark ignition engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61218761A true JPS61218761A (en) | 1986-09-29 |
Family
ID=13077653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60058209A Pending JPS61218761A (en) | 1985-03-25 | 1985-03-25 | Starter for suction pipe internal ethanole injection type spark ignition engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61218761A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0373652U (en) * | 1989-11-20 | 1991-07-24 | ||
| WO2009053749A1 (en) * | 2007-10-27 | 2009-04-30 | Uav Engines Ltd | A fuel heating apparatus |
| CN102889159A (en) * | 2012-10-24 | 2013-01-23 | 山西鼎乔科技有限公司 | Cold-start preheating device for methanol fuel automobile |
-
1985
- 1985-03-25 JP JP60058209A patent/JPS61218761A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0373652U (en) * | 1989-11-20 | 1991-07-24 | ||
| WO2009053749A1 (en) * | 2007-10-27 | 2009-04-30 | Uav Engines Ltd | A fuel heating apparatus |
| CN102889159A (en) * | 2012-10-24 | 2013-01-23 | 山西鼎乔科技有限公司 | Cold-start preheating device for methanol fuel automobile |
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